Study and Analyze the Effect of Inorganic Filler on Ionic Conductivity in Polyethylene Oxide (PEO) Composite Polymer Electrolyte.

Abstract

This work is mainly focused on achieving energy challenges that can arise in future. Solid electrolyte which is used in secondary battery is an attractive technology to meet future energy demands as renewable energy resources. Solid electrolyte is next generation technology comparing to liquid electrolytes because of its easy handling easy processing and having flexible structure. The motive of current research work is to make such solid electrolyte material for secondary battery, PEO based composite polymer electrolytes were made to analyze the effect on conductivity of ions in solid polymer electrolyte by the incorporation of nano-filler. Characteristics of samples that were made with polyethylene oxide host polymer characterized with various techniques like XRD analysis it was observed that PEO:Lithium Triflate with 10:1 ratio showed two peaks at 23.3° and 19.06° which is corresponding to crystalline phase of the PEO, FTIR analysis identified presence of groups that are -OH, -CH, C=O and Ti-O at 3500cm-1 , 2970 cm-1 , 1642 cm-1 , 640 cm-1 respectively, SEM confirms the morphology of the samples and EIS conducted to obtain ionic conductivity of CPEs, maximum ionic conductivity was calculated 2.08x10-1 mS/cm without any filler. TiO2 nano-filler was utilized to make composites. It is observed that with increasing TiO2 in the host polymer with fixed amount of PEO and salt there is significant decrease in the crystallinity of the composite films comparing to pure PEO while increasing amorphous region in the CPEs which is responsible for the conduction of ions. The PEO and salt complex film has exhibited an increased conductivity which is around five times greater in magnitude than that of the pure polymer.